807135842 has 6 divisors (see below), whose sum is σ = 1210764033. Its totient is φ = 403547832.

The previous prime is 807135829. The next prime is 807135869. The reversal of 807135842 is 248531708.

It can be written as a sum of positive squares in 2 ways, for example, as 676468081 + 130667761 = 26009^2 + 11431^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=20089.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 807135796 and 807135805.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 30134 + ... + 50222.

Almost surely, 2^807135842 is an apocalyptic number.

807135842 is a deficient number, since it is larger than the sum of its proper divisors (403628191).

807135842 is an frugal number, since it uses more digits than its factorization.

807135842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40180 (or 20091 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 807135842 is about 28410.1362545131. The cubic root of 807135842 is about 931.0697375695.

The spelling of 807135842 in words is "eight hundred seven million, one hundred thirty-five thousand, eight hundred forty-two".